Machine for wrapping insulation



J. J. KEYES MACHINE FOR WRAPPING INSULATION Filed Dec. 27, 1922 I lN-VENTOR John J. Keyes 2 W ATT'ORNEY WITNESSES:

Patented Dec. 16, 1924.

UNITED STATES 1,519,313 PATENT OFFKIE.

JOHN J. KEYES, F WILKINSBURG, PENNSYLVANIA, ASSIGNOR TO WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A CORPORATION OF PENNSYLVANIA.

MACHINE FOR WRAPPING INSULATION.

Application filed December 27, 1922. Serial No. 609,170.

T 0 all whom it may concern:

Be itknown that I, JOHN J. KEYES, a citizen of the United States, and a resident of lVilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Machines for Wrapping Insulation, of which the following 'is a specification.

My invention relates to wrapping devices, more especially to a device adapted to wrap insulating ribbon. or tape on electrical conductors as they are being wound on coil forms or the like.

It is among the objects of my invention to provide a wrapping mechanism of the abovedesignated character which shall be of simple, inexpensive construction, which shall be easy to manipulate, and which shall be adapted to all manner of conductor insulat ing applications.

Various types of insulating wrapping n achines that havebeenproposed heretofore, operate on the principleof, rotating a sup ply reel of insulating ribbon axially about a conductor member so as. to form a continuous wrapping of helical convolutions about the conductor body while being fed through suitable guides embodied in the device. These machines have been more or less complex and bulky in their construction and could not be conveniently employed in conjunction with other devices such as coil-forming machines in which it is desired to insulate the conductor and wind it upon the coil forms contemporaneously.

My invention is directed to a simple insulation wrapping mechanism which is of sim-- ple, compact and light-weight construction and may be employed contemporaneous with a coil-winding machine, the mechanism functioning to wrap the insulation about the conductor member as it is fed into the coil forms.

In the accompanying drawing constituting a part hereof and in which like reference characters designate like parts, the single figure is a side elevational view of a wrapping device embodying the principles of this invention.

The device consists of a frame 1 having a restricted portion 2 provided with a central opening 3 which functions as a guide, and a constricted shaft portion t on its opposite end which is adapted to rotatably mount a supply reel 6 of insulating material, such as ribbon or tape 7. The frame 1 is provided with an opening 8 and is expandedto provide room for a pair of friction wheels 9 and 10 that are each provided with beveled gear teeth 11. The wheels 9 and 10 are adapted to operatively engage a conductor member 12 that is disposed through the guide portions constituting the openings 3 in the ends of the frame through which it is fed in a continuous strip. A pair of shafts 13 are rotatably mounted by an adjustable bracket 14 and a plurality of up-struck bearing portions 14 on the main frame 1 and are provided with a beveled gear pinion 17 and a spur gear pinion 18 which engage the beveled gear teeth 11 of the friction wheels 10 and the internal gear teeth 19 of the supply reel 6, respectively.

One end of the conductor 12 is secured to a coil form or mold and its other end is fed from a supply reel (not shown). As,

the conductor is wound in layers usually contiguous and superposed upon the forms, it advance s through the wrapping device, as illustrated, and, by. virtue of its frictional engagement with the wheels 9 and 10, respectively, the supply reel 6 is rotated through the beveled gears 17, the parallel shafts 13 and spur gears 18, respectively. The spur gears 18 actuate the internal gear 19 forming the base of said reel. The rotatory motion of the supply reel 6 forms a continuous helix of helically wound layers 20 of the insulating material 7 upon the conductor 12 as it advances to the coil-forming machines (not shown).

t is evident, from the above description of my invention, that a wrapping device made in accordance therewith provides a simple and expedient means for wrapping insulating material on bare conductors which are to be used for dynamo-electric machines and the like, and is of special merit where the rate of feed is not uniform as in the winding of a rectangular coil.

Although I have described a specific embodiment of my invention, it will be obvious to those skilled in the art that various modifications may be made in the details of construction without departing from the principles herein set forth. For instance, the design of the frame or holder and the means employed for operating the device may be modified in accordance with specific requirements of use.

I claim as my invention:

1. A conductor Wrapping device comprising a holder having a guide adapted to receive a conductor member, a supply reel mounted eoaxially with said guide on said holder for carrying insulating Wrapping material and means for actuating said reel on said holder to effect rotation thereof relative to the speed'of feeding the conductor member.

2. A conductor Wrapping device comprising a holder having a guide adapted to receive 'a conductor member, a supply reel. mounted coaxially with said guide on said holder for v carrying insulating Wrapping material and means for actuating said reel on said holder to effect rotation thereof relative to the conductor member, said means comprising a plurality of geared shafts dis posed parallel to said conductor member and having toothed engagement with said reel.

3. A conductor Wrapping device comprising a holder having a guide adapted to receive a conductor member, a supply reel secured to said holder for carrying insulating Wrapping material and means for actuating said reel on said holder to effect rotation thereof relative to the conductor member, said means comprising a plurality of friction gears in engagement Withthe conductor member and geared to a pair of shafts having gear Wheels secured at their. respective ends to engage an internal gear comprising part of the supply reel.

4. A conductor wrapping device comprising a holder having a plurality of guides adapted to re:;eive a conductor member, a supply reel secured to, said holder for carrying insulating Wrapping material; and means for actuating said reel on said holder to effect rotary movement thereof relative to the conductor member, said means comprising a plurality of friction gears in engagement with the conductor member and having a bevel gear connection with a pair of shafts having gear Wheels secured at their respective ends to engage an internal gear comprising part of the supply reel.

5. A conductor wrapping device comprising a frame member having a plurality of guides adapted to receive a conductor, a supply reel rotatably mounted thereon, means for guiding'insulating ribbon from said reel to said conductor to form spiral convolutions and means for simultaneously advancing said conductor.

6. A conductor wrapping device comprising a frame member having a guide adapted to receive a. conductor, a supply reel rotatably mounted coaxially with said guide,

means for rotating said reel about said conductor to form spiral convolutions of insulating material thereon and means for simultaneously advancing said conductor relatively to said reel.

In testimony whereof, I have hereunto subscribed my name this 18th day of December, 1922. 1

JOHN J. KEYES. 

